typedef struct information{
	char telphone[16];
	char sex;
	short int age;
	char phone[8];
	char name[16];
	struct information *next;
}CI;
CI *head;
extern menu();
extern add();
extern show();
extern modify();
extern find();
extern del();
extern filewriteauto(CI *p);
extern filewritefor(CI *p);
extern CI *fileread();